TY - JOUR
T1 - Measurement of Z0-boson production at large rapidities in Pb–Pb collisions at sNN=5.02TeV
AU - Acharya, S
AU - Adamova, D.
AU - Adolfsson, Jonatan
AU - Aggarwal, M.M
AU - Aglieri Rinella, G
AU - Agnello, M.
AU - Christiansen, Peter
AU - Oskarsson, Anders
AU - Richert, Tuva
AU - Silvermyr, David
AU - Stenlund, Evert
AU - Vislavicius, Vytautas
AU - ALICE Collaboration
N1 - Export Date: 3 April 2018
PY - 2018
Y1 - 2018
N2 - The production of Z0 bosons at large rapidities in Pb–Pb collisions at sNN=5.02TeV is reported. Z0 candidates are reconstructed in the dimuon decay channel (Z0→μ+μ−), based on muons selected with pseudo-rapidity −4.0<η<−2.5 and pT>20GeV/c. The invariant yield and the nuclear modification factor, RAA, are presented as a function of rapidity and collision centrality. The value of RAA for the 0–20% central Pb–Pb collisions is 0.67±0.11(stat.)±0.03(syst.)±0.06(corr. syst.), exhibiting a deviation of 2.6σ from unity. The results are well-described by calculations that include nuclear modifications of the parton distribution functions, while the predictions using vacuum PDFs deviate from data by 2.3σ in the 0–90% centrality class and by 3σ in the 0–20% central collisions. © 2018 The Author(s)
AB - The production of Z0 bosons at large rapidities in Pb–Pb collisions at sNN=5.02TeV is reported. Z0 candidates are reconstructed in the dimuon decay channel (Z0→μ+μ−), based on muons selected with pseudo-rapidity −4.0<η<−2.5 and pT>20GeV/c. The invariant yield and the nuclear modification factor, RAA, are presented as a function of rapidity and collision centrality. The value of RAA for the 0–20% central Pb–Pb collisions is 0.67±0.11(stat.)±0.03(syst.)±0.06(corr. syst.), exhibiting a deviation of 2.6σ from unity. The results are well-described by calculations that include nuclear modifications of the parton distribution functions, while the predictions using vacuum PDFs deviate from data by 2.3σ in the 0–90% centrality class and by 3σ in the 0–20% central collisions. © 2018 The Author(s)
U2 - 10.1016/j.physletb.2018.03.010
DO - 10.1016/j.physletb.2018.03.010
M3 - Article
SN - 0370-2693
VL - 780
SP - 372
EP - 383
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
ER -